The "whistle spectrum" in Appingedam, The Netherlands

Monitoring the VLF spectrum arount 8270 Hz (+/- 0.2 Hz)
Soundcard SR continuously monitored against 1 PPS from GPS
Antenna is Mini Wipe by PA0RDT

 

 

DF6NM http://df6nm.darc.de/vlf/vlfgrabber.htm 

DK7FC http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_VLF_Grabber.html

Todmorden http://abelian.org/vlf/fbins.shtml#p=1389549600&b=090&s=sp

PA1SDB http://home.deds.nl/~knol 

IK1QFK http://www.vlf.it/cumiana/livedata.html

IK7FMO http://www.aeritel.com/vlf/index.html

OK2BVG http://www.ok2bvg.cz/vlfgrabber

 

73's, Peter - de PA1SDB in Appingedam, JO33kh
(pa1sdb (at) amsat.org)

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